Prefabricated buried pipe insulation structure: high temperature prefabricated buried pipe insulation is mainly composed of four parts. (1) Work Pipe: According to the technical requirements of the transmission medium were used seam steel pipe, seamless steel pipe, double-sided spiral submerged arc welded steel pipe. Insulation layer: rigid polyurethane foam. (3) protective shell: high density polyethylene or fiberglass. (4) leakage alarm line: high-temperature high-temperature manufacturing prefabricated buried pipe insulation is mainly composed of four parts. (1) Work Pipe: According to the technical requirements of the transmission medium were used seam steel pipe, seamless steel pipe, double-sided spiral submerged arc welded steel pipe. (2) thermal insulation layer: rigid polyurethane foam. (3) protective shell: high density polyethylene or fiberglass. (4) leakage alarm line: the manufacture of high temperature prefabricated buried pipe insulation, the insulation layer close to the pipe, the embedded alarm line, once the pipeline leak occurred somewhere, buried pipe insulation prefabricated conduction through the alarm line, it can show the exact location of the alarm and the extent of the size of the leak and the leak in the dedicated instrumentation to notify maintenance personnel to quickly deal with leaky pipe section to ensure the safe operation of the heating network. The basic structure of buried pipe insulation pipe work - insulation layer - the outer protective tube. Cangzhou Pipe Co., Ltd. Cheng source specializing in the production pipeline corrosion insulation manufacturers, the main products are: 1, high-density polyethylene pipe insulation polyurethane foam, standard: SY/T114-2000, SY/T115-2001; 2, with three oil and gas layer of polyethylene (3PE) pipe corrosion, two polyethylene (2PE) Pipe Coating Standard: SY/T0413-2002; DIN30670. 3, oil and gas with FBE (single-layer FBE corrosion) steel, 2FBE (double corrosion FBE) pipe, standard: SY/T0315-97, SY/T0315-2005; 4, cement water pipes the mortar lined steel pipe corrosion, Standard: CECS10: 89; 5, coal tar epoxy glass cloth pipe corrosion, Standard: GB50268-97, SY/T0447-96; 6, the water line pipe coating IPN8710 Polymer non-toxic paint, standard : SY/T0457-2000; 7, coal tar epoxy, IPN8710, chlorinated rubber, polyurethane and other anti-corrosion coatings